Papers by Christian Johansson
Proceedings of the Design Society: International Conference on Engineering Design
In the production of automotive body components, fixtures are an important part of the ongoing wo... more In the production of automotive body components, fixtures are an important part of the ongoing work on geometrical assurance. The fixture is uniquely defined for each component, and the design and configuration of these are time-consuming and takes a lot of effort. The objective with this paper is to explore the use of a design automation approach and application to semi-automate the configuration process of the fixture product. The paper presents an approach to automate the configuration of the fixtures in a flexible way, by reverse engineering the configuration of the fixture product from a generic blueprint that represents the expected outcome of the process, using a knowledge-based engineering approach applied to a computer aided design (CAD) environment. A reverse-engineered design automation toolbox for a CAD-software is developed. The toolbox is developed to lead a user through the configuration process, in the way that the experts want it done, end-to-end, making use of some...
Procedia CIRP
In production of automotive components, control-measuring is an important activity to assure that... more In production of automotive components, control-measuring is an important activity to assure that geometries meet expected tolerances. This is done via randomly taking parts out of production for control-measuring in a fixture. This fixture is both a tedious and repetitive product to design and configure. The aim of this paper is therefore to present an approach to adopt a design automation strategy towards supporting the configuration of fixtures and to discuss opportunities for moving towards a Product-Service System-paradigm in this domain. This paper reports on a development of a design automation demonstrator to configure fixtures for control-measuring. The demonstrator has been developed in a commercial CAD-environment and will be deployed through a web-based interface. The paper concludes with a discussion on PSS-opportunities and how to drive this with a Knowledge-Based Engineering-modelling approach.
Procedia CIRP, 2016
Reports about the depletion and pollutant of the earth by human interference and the increasing n... more Reports about the depletion and pollutant of the earth by human interference and the increasing need for urbanised areas require us to think differently about how we go about achieving this increased urbanisation. In this context, urban mining, where demolition sites are mined for increased recycling and value extraction. Due to high specialisation of construction equipment for this context, as well as sustainability being an important factor, product-service systems are suggested as a way forward in this area. This paper presents key topics that needs to be addressed when developing sustainable product-service systems for the urban mining segment. The idea is to transform from a traditional construction and demolition perspective towards a PSS-based construction product for an urban mining environment, incorporating a circular economy perspective. A modification to the common business model notation of business model canvas, with guiding questions is suggested. Opportunities for improved sustainability lies both in application -within an urban mining site -and in the enabling technology -when technology is specialised, owned by the provider, and utilised by multiple partners.
VIVACE1 is an EC-funded integrated project that addresses aeronautics ́ vision for the year 20202... more VIVACE1 is an EC-funded integrated project that addresses aeronautics ́ vision for the year 20202. More specifically VIVACE intends to achieve cost reduction and time reduction in new aircraft development. VIVACE consists of three sub-projects where the two first extracts problems from aircraft and engine industries respectively. The third sub-project collects these problems and develops advanced capabilities (methods, tools, guidelines, etc.). The ’Knowledge Enabled Engineering’ (KEE) work package in subproject three focuses issues on concerns associated with knowledge within an extended enterprise. This includes both Knowledge Based Engineering (KBE) issues, but also more general questions about engineering knowledge. The work starts in analysing requirements from use cases via finding existing solutions to conducting tests in the form of pilots. Finally the knowledge acquired is disseminated to both the aeronautics community and also to a wider audience in Europe and the rest of the world. One result from the work in KEE is the Knowledge Lifecycle (see figure 37). This is a method for matching requirements found in use cases to knowledge activities. The circular arrow shows that the process is not sequential by stating a start and end, the idea is that you can start anywhere in the Knowledge Lifecycle. Below follows a more detailed description of the phases. Knowledge in an organisation can be codified and put in its knowledge base in varying formats (hypertext documents, email, multimedia, database elements, etc.) Seeking access to information and knowledge from various sources (computer, colleagues, documents, libraries) in the organisation. Both tacit and explicit knowledge can be shared from one individual to another. Barriers include competition, knowledge of value, different disciplines and languages, what to share and who to share with. What knowledge should be used and what should not be used? Users can retrieve knowledge in the organisational memory and re-use it whenever they need. This is both an individual and organisational process. There is a feedback loop for learning. Creating new knowledge (within the organisation) to provide new skills, ideas and improved organizational processes and competencies. Acquiring knowledge from outside the organisation through the engagement of experts, access to documented knowledge and the participation in knowledge-related events and process. Visualising the organisation ́s knowledge assets; these are, for example, an employee ́s skills, networks of experts, organisational competencies, but al- so more explicit knowledge sources such as data and documents. Documenting or codifying the knowledge that has been identified or created. This can include reports, white papers, databases, posters, internal publications and other mediums.
Procedia CIRP, 2015
Expanding Value Driven Design to meet Lean Product Service Development.
This document specifies the Use case references, requirements and specifications of the Virtual E... more This document specifies the Use case references, requirements and specifications of the Virtual Enterprise Collaboration Hub defined by WP3.6 ... Deliverable/Output n°: D3.6.2_1 Issue n°: V1.04 ... Engineering collaboration hub shared data processes workflow ... This document is classified as VIVACE Public ... 2.1. The Extended Enterprise turning into the “Virtual Enterprise”....................................8 ... 2.4. Service Oriented Architecture – in a hub environment.............................................12 ... 2.5. The Hub concept applied to a ...
With more projects in today's industry being global it is important to support the people co... more With more projects in today's industry being global it is important to support the people collaborating in these projects. Travel is expensive and time consuming and is not viable in the long run. Although some travel is necessary it is important for people to meet virtually instead.
Research into Design: Supporting multiple facets of product development, 2009
abstract: The procedure described here represents the basis for the development of pro le-like st... more abstract: The procedure described here represents the basis for the development of pro le-like structures by the Collaborative Research Center 666" Integral sheet metal design with higher order bifurcations". The goal is to create an algorithm-based approach for developing optimal pro le structures manufactured by the new linear flow splitting technology. The fundamental assumption is that the problem is de ned verbally from a customer's point of view and this typically unfocused, incompletely formulated task is eshed out step by step ...
abstract: Innovation is often measured based on how the product performs on the market. This make... more abstract: Innovation is often measured based on how the product performs on the market. This makes it difficult to measure the performance of a team since the time to develop a product may take several years. In this paper we show the importance of creating a common ground and facilitation in a team, two aspects that is not easy measure, but should be assessed. We also discuss innovation on three interrelated organizational levels, the operational, which is the development team and in focus in this paper, the managerial and ...
In product development, lead-time reduction, cost reduction, and quality improvement are issues t... more In product development, lead-time reduction, cost reduction, and quality improvement are issues that companies want to improve on to increase competitiveness. One recent approach to reach this–particularly in the aerospace industry where the complexity of product offers is steadily increasing–is to manage risk by forming virtual enterprises. A virtual enterprise is a network of partner companies that join on equal terms when an opportunity arises to develop a product offer, eg a jet engine offer, in a more agile manner than if any ...
Proceedings of the 18th International Conference on Engineering Design (ICED11), Vol. 9, 2011
abstract: The development of complex products, characterized by long lifecycles and deep supply c... more abstract: The development of complex products, characterized by long lifecycles and deep supply chains, requires enhanced capabilities to assess, in an early design stage, the value of a solution not merely from a requirement fulfillment perspective. The paper proposes a conceptual scenario, described in terms of activities, inputs, outputs, actors and mechanisms, which details how aircraft components can be developed and assessed with a focus on their value contribution at system level. The scenario proposes a set of ...
Business, 2009
In stage-gate processes decisions are made based on the knowledge and information developed durin... more In stage-gate processes decisions are made based on the knowledge and information developed during the preceding phase. The purpose of this study is to explore the state-of-practice in industry regarding the assessment of knowledge and information at gates. The result indicates that gate reviews relate mainly to assessments of technical performance and function. Relatively little attention is given to assess the quality of the knowledge base, making it difficult to identify outdated, irrelevant and nonapplicable information and knowledge. Further, tacit knowledge plays an important role in the decision-making process, as reviewers ask for the design rationale and further evidence of what has been done and why. However, evaluating such knowledge is currently a poorly understood aspect of gate reviews. It is concluded that even though the specific focus of such meetings is not on the evaluation of knowledge and information, the opportunity to work towards a better support of such activities is promising, especially since the respondents perceive the benefits that come from an increased attention to assessments of both the explicit and tacit knowledge base used in gate reviews.
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Papers by Christian Johansson